Power control of TAMR element during read/write transition
a power control and transition technology, applied in the field of magnetic read/write head fabrication, can solve the problems of not being able to achieve further increases in recording area density within those schemes, unable to adequately compensate for antenna protrusion, and inability to meet the requirements of simultaneous recording, etc., to achieve the effect of reducing the transient protrusion of plasmon antennas
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The preferred embodiment of this invention is a method and device for implementing that method, for reducing the adverse effects of thermally stimulated TAMR plasmon antenna protrusion transients that occur when a DFH read / write head cannot respond quickly enough to compensate for the thermally stimulated antenna protrusion by an increase of the slider ABS fly height. When a plasmon antenna absorbs energy from incident electromagnetic radiation at optical frequencies, it protrudes as a result of thermal expansion with a time constant ΘPA. When the DFH heating element is activated, the slider responds by increasing its fly height with a time constant ΘDFH. Because ΘDFH>ΘPA, the protrusion of the antenna cannot be compensated quickly enough by the retraction effect produced by the DFH mechanism and there is a brief transient period, shown graphically in FIG. 5 and discussed in greater detail below, during which the antenna protrudes severely enough to cause interference with the recor...
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